The deviantArt community CAN get finicky when art shows up on other sites -- MOSTLY when it shows up on sites being presented as free media (when it isn't) or worse, websites trying to sell copies of the art. That's bad. Generally, you want to contact the original artist if possible.

Personally, I think it's kind of inevitable that if you put it on the internet, it's *going* to get around. Me, I love seeing my art being used elsewhere. (This one, I especially created with that hope. Plus, it was just funny. At one point, I had the intention of actually mailing it to James White!)

There is, however, something some artists do called "creative commons" and especially on dA, you can see what work is free to use by what degree. It's kind of hard to explain, but worth reading up on!

Anything I create is free to show up on blogs -- especially those promoting the gospel. =)

Sorry for the late response. I somehow get no notifications when I respond to this kind of thing, lol.